core

### QuickAlign Error Messages

If the set of feature commands does not form a valid alignment, the alignment is not created. In addition, PC-DMIS shows one or more of these error messages:

- "Unsupported feature combination!" - This message means the selected combination of features does not define a well-formed alignment.

- "<FEATURE> is invalid!" - This message means the feature represented by <FEATURE> has errors in its definition; this usually occurs with a line measured on a surface where the line's line direction vector and the surface's normal vector are not perpendicular.

- "<FEATURE> is not valid as the alignment second feature!" - This message means the feature represented by <FEATURE> cannot be used as the second feature in the alignment, due to its vector direction or its origin location.

- "<FEATURE> is not valid as the alignment third feature!" - This message means the feature represented by <FEATURE> cannot be used as the third feature in the alignment, due to its vector direction or its origin location.

- "Alignment error!" - This message indicates a general QuickAlign or Auto-align error.

If PC-DMIS creates the alignment, but it has problems with its degrees of freedom, PC-DMIS shows one of the following warning messages:

- "<FEATURE> is not used. All DOFs constrained by first two features." - This message means that all six degrees of freedom (DOF) are already constrained by first two features used to define the alignment; so the third feature isn't used to constrain any of the DOF.

- "Not all 6 DOFs constrained" - This message means that the three features used to define the alignment, do not constrain the six DOF, even though PC-DMIS creates a valid alignment.

- QuickAlign determines if an axial feature is in a given plane by checking if the vector of the feature (such as a circle, cylinder, cone, or line) is within +/- 5 degrees of the axis or vector of the primary feature.

- QuickAlign determines if an axial feature can be used for rotation by checking if it is more than 45 degrees from the primary feature vector.